If you are trying to launch Adobe Illustrator but keep getting error The Operation Cannot Complete Because Of An Unknown Error [CAN’T]. This article will show you how to quickly and easily solve the problem allowing you to launch Adobe Illustrator without getting this annoying error message.

Related: How to fix Illustrator error: Your graphics processor is incompatible.

Like all of Adobe’s other software, Illustrator has just as many annoying bugs and problems you may come across while using it. You may even come across some bugs and errors just trying to launch Adobe Illustrator on your system. More often than not this issue occurs because of a file corruption or a bad software update, either from Adobe or Windows.

The good is that Illustrator error: The Operation Cannot Complete Because Of An Unknown Error [CAN’T] can easily be solved without making any major changes to your system or spending a ton of time troubleshooting. It simply requires deleting a problematic folder in File Explorer and letting Adobe create a new folder in its place. So follow along as we guide you through the steps.

How do you fix Adobe Illustrator: The Operation Cannot Complete Because Of An Unknown Error [CAN’T]

  • When you get this error message the first thing you need to do is close Adobe Illustrator and the error message.
  • Next, open File Explorer by pressing the Windows Key + E shortcut.
  • When File Explorer is open go to the following location:

C:\Program Files\Common Files\Adobe

  • Here you will see a folder called UXP. Right-click on it and select Rename then name the folder 00UXP or anything else, it doesn’t really matter what the folder is called.

Solution Adobe Illustrator The Operation Cannot Complete Because Of An Unknown Error

This change will ensure that Illustrator doesn't recognize the existing UXP folder, prompting it to create a new one upon startup. The next time you launch Adobe Illustrator it will create a brand new UXP folder and launch properly without showing error The Operation Cannot Complete Because Of An Unknown Error [CAN’T].

You can now go back in and delete the old UXP folder without any consequences. If the error message ever returns you can repeat the same exact steps and it will go away.